so i made my first trip this past weekend to deliver an 85 nissan 4x4 pickup (rolling on 31X10.50X15's) to my dad in NC. rented a Uhaul trailer, loaded up the extra wheels/tires, loaded the ole girl up and took off.
first thing i noticed. best way to get the most fuel economy, keep it wound up. i noticed on the interstate if i stayed above 2,000RPMS, i got better mileage. i just increased my speed to 65-70. TOW/HAUL is your friend. do not tow without it. highest temps i saw on the interstate from Knoxville to Bristol - 190ECT and 185EOT, and thats running 70
, and my max trans temp was 170*.
highest i EVER saw on ECT and EOT was 214* on coolant on the last long hard uphill into the backside of Boone NC, EOT barely hit 200* (i love my BPD kit). now, for those of you running the SCT livewire TS, or any SCT that has the "jake brake" option (uses the VGT as an exhaust brake), ITS AWESOME. we are talking holding between 55 and 60mph on the steep downhill grade on 421 between Boone/Deep Gap and Wilkesboro with TOW/HAUL engaged (thats the only time the "brake" works). if i hit the brakes again, it would drop my speed more and not go above 45 DOWNHILL with the full load behind it. i was seriously impressed.
fuel economy did suck though. i think my uncles 7.3 got better mileage pulling our Chevelle to NC. i love this truck though.